For 214red
You noted in one of your posts, "my mate have has a 3rd house sun, and she gets on with her siblings but she finds it hard to find a separate identity from her siblings, and find a role for her in the family. she also has a small amount of rivalry. there is also meant to be an issue with early schooling in this house two."
I don't want to make the issue of house meanings complicated but your statement (above) offers an excellent opportunity to talk about a deeper version of house interpretation.
** The 3rd house is the house of siblings, the family (or part of it) is represented by the 4th house. "Having trouble finding her identity" can, in part, be a 1st house issue.
** Now, let's do a little mental gymnastics. Your mate, with Sun in the 3rd, will be identifying her identity as if the 3rd house was her 1st house. Simple.
Let's just go with that statement.
** The family, in part, is the 4th house of a chart. Your mate's Sun, being in the 3rd house is also ---- relative to the 4th house ---- in the 12th house of the family, relatively speaking. If the family is one focus, the 4th house will be treated as the 1st house, and your mates Sun will be in the Family's 12th house, just preceding the (temporary) 4th house acting as a 1st house.
This is why she may have trouble establishing her identity in terms of her place and role in the family---she is hidden away in a "type of 12th house situation." The size of the family (if large) could deny enough attention and time to gain recognition. Her birth sequence, if following several others, could move her down the list in terms of being able to compete with the actions of others who are older. One or two precocious siblings could just be stealing the spotlight from her. Other aspects of the chart would need to be carefully looked at in order to better define the situation.
The overall point I wanted to make, especially when considering the role of the Sun and/or Moon in houses, is that every house is both "itself" and "something else when it is related to the other houses." This technique is referred to as Derivative Houses. Robert Pelletier, an old mentor of mine, has a book called Planets in Houses which is the definitive work on this subject. (However, its detailed content is not meant for those who like light reading). Multiple meanings, cycles within cycles, and all of that sort of thing. Those of us who have done this for many years see these things without even thinking of them, which makes it hard to to teach others if we ourselves are almost "blind" to what we are doing. But, that is the fascinating aspect of astrology, its never-ending mysteries. Dave