No relation.

From the CA Death Index:
Is this your Nicholas Moreci?
MORECI NICHOLAS 1879 03 06 MORECI MALE RE died SANTA BARBARA 1941 10 10 age 62

MORECI ANGELINA 1883 01 28 PIAZZA FEMALE RE SAN FRANCISCO 1959 10 21 76

Births:
MORECI VINCENT 1909 03 05 PIAZZA MALE SAN FRANCISCO 0
? MORECI JOE 1914 04 14 PIAZZA MALE SAN FRANCISCO
? MORECI MARIE 1924 07 07 PIAZZA FEMALE SAN FRANCISCO

Deaths

MORECI ANTHONY 1920 02 01 PIAZA MALE CA SAN FRANCISCO 1968 02 22 564049930 48
MORECI SAM 1905 04 11 PIAZZA MALE CA SAN MATEO 1995 11 06 546143759 90
MORECI VINCENT 1909 03 05 PIAZZA MALE CA CONTRA COSTA 1984 05 02 567036613 75

BONHAM LEE D 1914 06 17 PIAZZA MORECI FEMALE CA CONTRA COSTA 1992 03 20 567162281 77

MORECI JOSEPHIN 12 08 1923 SAN FRANCISCO age 17