Gregorio Zalvidea was born around 1900 and married
Lucila Torres, born around 1910, on 18 July 1931 in Pasay City, Rizal, Philippines.
I also attached a copy of the marriage register mentioning their marriage, although their parents unfortunately aren't mentioned. Take a look at line 202.
Jose F Zalvidea, born 19 June 1932, died 28 January 2000 in Placer, California.
Although four years late, I hope this info helps!