Looking at my book here...
{Alan Oken, Houses in the Horoscope}H10 ... The partner's mother and family.
H9 ... Brothers-/sisters-In-Law
___________
H1 ... Paternal aunts/uncles
H1 ... Maternal grandFather
H1 ... Paternal grandmother
H3 ... siblings (bro or sis) (esp. the eldest of, first-one)
H4 ... Family background 'in general';
H4 ... "parental influence" in particular.
H6 ... Maternal aunts and uncles.
H7 ... Partners;
H7 ... Also is the Mother's family;
H7 ... (especially, 'maternal' grandmother)
H10 ... The father and all authority figures
H11 ... Partners/spouses of "one's children"
meaning e.g. <7th=Partners; from 5th=children>
Other examples...........
For sister's husband use H9--
7th=partner from the 3rd=sister/siblings>
Count 7 houses from 3rdHouse(asH1)
Your grandchildren, use H9--
9th House = H5 (children; asH1) counting 5 more -- thus, 5th (children) from the 5th---
(The Children's children)
Still new at this!!! Just beginner-Learner here!
ADD---
I like info on Vedic--
however, I've heard it said that they have their own system-interpretations, and it's to be regarded as 'separate' from the Westerns?
But I DO like considering their descriptions.
Adds depth to meanings.
e.g. H4 Vedic is supposed to be 'how you feel'... your emotions?
Vedic systems DO NOT include the outer three-- Uranus, Neptune, Pluto?
In WESTERN this is the Cancer natural house, ruled natural Moon.
You might want to check? Vedic/sidereal planets MAY be lodging in a different House, than with western astrology?
hahaha... It's ALLLLL just Fascinating!