The short answer is yes; the long answer is it depends.
Without a physical body, Spirit Guides can assist you with many things that your friends in physical bodies cannot - such as behind the scenes nudges, indispensable unbiased guidance, and support at all and any hour that you need it.
Unlike Angels, while a Spirit Guide can technically be any familiar spirit that guides you, but largely a Spirit Guide has these characteristics:
The being has generally taken a human, animal or physical existence before now - as now they are assisting you in a non-physical form - in Spirit
You can know many of your Spirit Guides from previous lifetimes
Spirit Guides are often dressed in period clothing from a variety of older time periods, generally a clue as to how they know you
It is also often said that Spirit Guides could not be Deceased Loved Ones that you knew while alive during this time of yours on Earth, but there are exceptions to this rule.
Once crossed, some members of the deceased can and do move rather quickly into guardianship and mentorship roles. Spirit Guides can also be friends and family members from previous lives and ancestors from before you were born into this life.
Which means that your ancestors, your great-great-grandparents and family members from the Civil War, can all be your Spirit Guides. I know; to some this is sacrilege to say, but I do see it every day.
However, some mediums say that your main Spirit Guides can't be your ancestors and this is partly true too.
The main catch behind being a Spirit Guide is that they must be able to offer you unbiased support and guidance. Your father, your brother and your mother, because they knew you while on Earth and have their personal wishes and desires for you, cannot do that it is thought. But, an unbiased, neutral third-party Spirit Guide, can.
If you have ancestors that are far enough removed from your immediate family members, that were wise, genuine, loving and are in a place now where they can offer you unbiased guidance and spiritual support - then they can fit into the Spirit Guide category.
So, how far removed does your Spirit Guide/Ancestor have to be to fit the model of official Spirit Guide?
They generally, but not always, this person has to have to have died well before you were ever born into a physical body and living. Those that pass suddenly or through the route of suicide are the often exception here, however; as these spirits may move rather quickly into guardianship roles for various reasons.
Amanda Linette Meder
PS - The most common case of a deceased becoming a spirit guide quickly is when the head of a household dies; this deceased person will then generally move rather rapidly through their afterlife work and then go on work on the team of angels to help their heirs have a better life from behind the scenes.
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