Judith and Colombe Magneron dit Lajeunesse are both daughters of the legitimate marriage of Michel Magneron dit Lajeunesse and Marie Charlotte Hely dit Janotte dit Belhumeur, see references. Any first nation link must be further back.
Judith was born/baptised 28 October 1813 in the parish of St Jacques, QC.
https://familysearch.org/pal:/MM9.3.1/TH-1942-28021-33834-75...Family Search, Quebec Parishes. St Jacques, St Jacques-de-Montcalm page 117
Colombe was born 11 July 1814 in the parish of ST Jacques, Qc.
https://familysearch.org/pal:/MM9.3.1/TH-1961-28021-32674-90...Family Search, Quebec Parishes. St Jacques, St Jacques-de-Montcalm page 407