Death in Intestate

[gino]

Hello,
Have a question re a family death. Will cannot be traced, so assume it’ll be classed as a death in Intestate.

Deceased had 4 children (A/B/C/D).
3 of those survive (A/B/C). The 4^th (D) passed a few years back prior to the deceaseds death.
The 3 surviving (A/B/C) all have dependents.
The deceased 4^th child (D) has a surviving spouse (Dspouse) and 3 children (D-C1/C2/C3) from 2 marriages.

Do the rules of intestacy mean the estate is split between the 3 direct surviving children on their own (A/B/C), or does it mean it’ll be split between the 3 surviving children (A/B/C), and (either the deceased’s childs surviving spouse (Dspouse) or directly to the deceased childs (D) (D-C1/C2/C3) surviving children)?

PS - in England.
Thank you.

[dslippy]

Was the deceased married? Assuming not:
Divide it into 4
3 surviving children take a quarter each.
3 surviving children of D take each one third of the remaining quarter.

[gino]

Was the deceased married? Assuming not:
Divide it into 4
3 surviving children take a quarter each.
3 surviving children of D take each one third of the remaining quarter.

Thank you DSlippy.
Correct, Elder deceased whose estate i refer was a widow. Their spouse died over 10 years ago.
I thought this might be the case, but was helpful to have reassurance.
I was wondering if the deceased child (D) current spouse who still survices would have automatically inherited, but sounds like it gets passed down to the deceased child D's own 3 children.
Thank you.