Gutman (Tuvia) Pipek and his wife Nechama/Necha (Grossman)  lived in Ostrowiec.

Only 2 of their children survived the Holocaust:

Fiszel -moved to Israel and changed name to Efraim Porat . He was married to Zipora  and moved to Venezuela in 1957. In 1992 the couple moved back to Israel. The couple were active in the Ostrowiec Descendants organization and supported many of the activities commemorating the Ostrowiec Jewish community .

Chaim- moved also to Israel but died in the Israel Independence War

Other children that perished in the Holocaust:

Eti/Esti 

Maly 

Yakov Leib/ Arie

Meitel 

Matitiyahu/Matis