The Police. Commissioner acting under the provisions of section 354 of the Greater New York Charter granted to the widow of the deceased policeman in question a pension of $600, effective as of the date of the policeman’s death, October 5, 1937. That pension was paid until September 13, 1942, on which date the widow, now Catherine Fitzsimmons, remarried and by operation of law lost all rights to a pension for herself.
In December, 1947, the two infant children of the policeman, by their mother as guardian ad litem, made a new application for a pension for the children to the commissioner’s successor, the board of trustees of the pension fund (established by Local Law No. 2 of City of New York of 1940, art. 1, § B18-6.0). The board granted the two children one pension of $600 effective November 6, 1947. Petitioners, the children, through their mother as guardian ad litem, contend that they are entitled to the pension from the date of their mother’s remarriage on September 13, 1942.
The law governing the rights of the infants is the pension statute in force in October, 1937, when the father, the policeman, died (Greater New York Charter, § 354). That law vested discretionary power in the police commissioner to grant pensions to the members of the police force, their widows and orphans. The present board of trustees of the police pension fund, as successors of the commissioner, have the same power in dealing with pensions with respect to members of the police force who died before December 30, 1937, when section 354 was effective.
Special Term held that the board in the exercise of its discretion properly refused to make the payments retroactive to September 13, 1942, when the widow remarried and properly *620fixed the date as of November 6, 1947, apparently the date of the mother’s appointment as guardian ad litem.
Subdivision la of section 354 of the Greater New York Charter, which was in effect at the time of the deceased policeman’s death in 1937, provides that: 61 All pensions herein granted shall accrue and be paid from the date of the death of such member of the police force ”. (Italics added.)
It is true that under section 354, the board, as successor of the police commissioner, had complete discretion to refuse to grant any pension to the children as the police commissioner had to refuse any pension to the widow; but under the provisions of subdivision la quoted above, we think that once the board exercised its discretion to grant the pension, the board has no discretion as to the date; the pension must date from the date of the mother’s remarriage, September 13, 1942, for then, considered in its total extent, the pension is paid from the date of the policeman’s death under the mandatory provisions of subdivision la.
The infant petitioners, in our opinion, are not estopped from asserting their claim.
But while the pension is payable from the date of the widow’s remarriage, under section 3-a of the General Municipal Law as amended, the claim, as a claim against a pension or retirement system is deemed to be a claim against a “ municipal corporation ’ ’ and under settled law interest thereon runs only from the date of filing a demand on the fiscal officer (Rapid Transit Subway Constr. Co. v. City of New York, 259 N. Y. 472, 495, 496, and cases cited). On the settlement of the order herein, the specific relevant date or dates can be agreed upon.
The order appealed from dismissing the petition should be reversed and an order entered directing respondents to make the pension payments of $600 to' appellants from September 13, 1942, to November 6, 1947, with interest only from the date of the demand and at 4% pursuant to section 3-a of the General Municipal Law. Settle order.