Not necessarily, as historic rates of Jewish interfaith marriage were until recently
extremely low.
https://en.wikipedia.org/wiki/Interfaith_marriage_in_Judaism:
Interfaith marriage in Judaism was historically looked upon with very strong disfavour by Jewish leaders, and it remains a controversial issue among them today. [..] In the early 19th century, in some less modernised regions of the world, exogamy was extremely rare—less than 0.1% of the Jews of Algeria, for example, practiced exogamy. In the early 20th century, even in most Germanic regions of central Europe there were still only a mere 5% of Jews marrying non-Jews.
To underscore how very disfavored mixed marriages were, Bernard S. Bachrach's Early Medieval Jewish Policy in Western Europe states (speaking about the 6th century, but it is unclear how wide-ranging this policy was):
According to Jewish custom a woman who willingly and openly went to live with a non-Jew was considered dead by her family and by the Jewish community. Legally it was the duty of the community to stone her to death if she could be found.