Forebearer and Omen

Forebearer noun - A person who is several generations earlier in an individual's line of descent.

Omen and forebearer are semantically related. In some cases you can use "Omen" instead a noun "Forebearer".

Omen noun - Something believed to be a sign or warning of a future event.

Forebearer and omen are semantically related. Sometimes you can use "Forebearer" instead a noun "Omen".